diff --git a/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java b/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java
index 54140d77952d1..cc63d9036b2f3 100644
--- a/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java
+++ b/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java
@@ -1024,6 +1024,7 @@ RemoteLocation getCreateLocation(
   /**
    * Get the location to create a file. It checks if the file already existed
    * in one of the locations.
+   * Asynchronous version of getCreateLocation method.
    *
    * @param src Path of the file to check.
    * @param locations Prefetched locations for the file.